feat: migrate hello baseline from Python to TypeScript

Replace the greenfield Python hello world with a Node.js 22/TypeScript/npm toolchain while preserving the existing greeting behavior.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/hello.test.ts

@@ -0,0 +1,13 @@
+import assert from "node:assert/strict";
+import { describe, it } from "node:test";
+import { greet } from "./hello.js";
+
+describe("greet", () => {
+  it("returns the default greeting", () => {
+    assert.equal(greet(), "Hello, TicketLab MCP!");
+  });
+
+  it("returns a greeting for a custom name", () => {
+    assert.equal(greet("World"), "Hello, World!");
+  });
+});

src/hello.ts

@@ -0,0 +1,20 @@
+import { pathToFileURL } from "node:url";
+
+/** Hello world for TicketLab_MCP. */
+
+/** Return a greeting for the given name. */
+export function greet(name: string = "TicketLab MCP"): string {
+  return `Hello, ${name}!`;
+}
+
+export function main(): void {
+  console.log(greet());
+}
+
+const entry = process.argv[1];
+const isMain =
+  entry !== undefined && import.meta.url === pathToFileURL(entry).href;
+
+if (isMain) {
+  main();
+}